Upgrade Vue 2.6 To 2.7

The most important resource for this transition is the official Vue 2.7 Migration Guide

beforeDestroy → beforeUnmount destroyed → unmounted (Old names still work as aliases in 2.7, but you should migrate to avoid future breakage).

module.exports = extends: ['plugin:vue/vue3-recommended'], // yes, 'vue3' works for 2.7 ; upgrade vue 2.6 to 2.7

Before touching the package.json , let’s understand what you gain.

this.obj.newKey = 'value' delete this.obj.oldKey The most important resource for this transition is

export default model: prop: 'value', event: 'input' , props: ['value']

Update tsconfig.json :

<template> <div> user?.address?.city ?? 'Unknown' </div> </template>